Theorem Subring.map_comap_eq_self_of_surjective

Modification history

2024-07-31 06:44
Mathlib/Algebra/Ring/Subring/Basic.lean
feat: add `comap_map` for sub(semi)ring, subalgebra, subfield and intermediate fields (#15193) …
Added Subring.map_comap_eq_self_of_surjectiveView on Github →